Two harmonic waves are described by $$y _ { 1 } = ( 3 \mathrm {~cm} ) \sin \left( \frac { 8.0 } { \mathrm {~m} } x + \frac { 2.0 } { \mathrm {~s} } t \right)$$ $$y _ { 2 } = ( 3 \mathrm {~cm} ) \sin \left( \frac { 8.0 } { m } x - \frac { 2.0 } { \mathrm {~s} } t \right)$$ What is the magnitude of the speed (in m/s)of the two traveling waves?
A)16
B)4.0
C)8.0
D)0.25
E)2.0

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The Answer of Two harmonic waves are described by $$y _ { 1 } = ( 3 \mathrm {~cm} ) \sin \left( \frac { 8.0 } { \mathrm {~m} } x + \frac { 2.0 } { \mathrm {~s} } t \right)$$ $$y _ { 2 } = ( 3 \mathrm {~cm} ) \sin \left( \frac { 8.0 } { m } x - \frac { 2.0 } { \mathrm {~s} } t \right)$$ What is the magnitude of the speed (in m/s)of the two traveling waves?
A)16
B)4.0
C)8.0
D)0.25
E)2.0

Two Harmonic Waves Are Described By y1=(3 cm)sin⁡(8.0 mx+2.0 st)y _ { 1 } = ( 3 \mathrm {~cm} ) \sin \left( \frac { 8.0 } { \mathrm {~m} } x + \frac { 2.0 } { \mathrm {~s} } t \right)y1​=(3 cm)sin( m8.0​x+ s2.0​t)

Two Harmonic Waves Are Described By $y _ { 1 } = ( 3 \mathrm {~cm} ) \sin \left( \frac { 8.0 } { \mathrm {~m} } x + \frac { 2.0 } { \mathrm {~s} } t \right)$